Which of the following could indicate signs of a terrorist attack?

• A. Strong chemical odors without apparent reason
• B. Unusual containers that are out-of-place with the surroundings
• C. Unexplained patterns of illness or death
• D. Calm weather

Answer: (B)

Spotting unusual containers that don’t fit the surroundings is a clear cue that something could be malicious. In this context, an object or package that looks out of place may be a concealed device or payload, which is a common method used in terrorist activities to deliver hazardous material or cause harm. That direct physical anomaly—a container that seems out of place—stands out as a potential deliberate action and should prompt heightened caution and escalation to authorities.

Other signs can be important in HazMat awareness, but they don’t point as directly to intentional wrongdoing. A strong chemical odor, for example, can occur from accidents, industrial processes, or natural releases and doesn’t by itself indicate a malicious act. Unexplained illness or death could have many benign explanations, ranging from medical conditions to environmental exposures not connected to terrorism. Calm weather offers no meaningful clue about a threat. If you encounter an unusual container, treat it as a potential threat: keep distance, avoid handling it, and report it with as many details as you can observe.